Add cache client selector

[johscheuer]

Description

Fixes: #985. This will reduce the cached resources to the once that matches the label selector if one is specified.

Type of change

Please select one of the options below.

• New feature (non-breaking change which adds functionality)

Discussion

Testing

Unit tests + CI will run e2e tests. I will run some additional tests.

Documentation

Follow-up

[foundationdb-ci]

Result of fdb-kubernetes-operator-pr on Linux CentOS 7

• Commit ID: 0988288
• Duration 1:40:31
• Result: ❌ FAILED
• Error: Error while executing command: if $fail_test; then exit 1; fi. Reason: exit status 1
• Build Log terminal output (available for 30 days)
• Build Workspace zip file of the working directory (available for 30 days)

[johscheuer]

The tests are failing because some of the older versions are removed from the CI env. #1923 will fix this.

[foundationdb-ci]

Result of fdb-kubernetes-operator-pr on Linux CentOS 7

• Commit ID: 14ced6f
• Duration 1:46:16
• Result: ✅ SUCCEEDED
• Error: N/A
• Build Log terminal output (available for 30 days)
• Build Workspace zip file of the working directory (available for 30 days)

[gm42]

@johscheuer I am seeing an odd issue with v1.33.0, which does not reproduce when reverting this change: when creating an empty cluster it fails to get the configmap for the cluster, and then fails to create it (because it actually already exists). Shall I open an issue with more details?

[johscheuer]

@johscheuer I am seeing an odd issue with v1.33.0, which does not reproduce when reverting this change: when creating an empty cluster it fails to get the configmap for the cluster, and then fails to create it (because it actually already exists). Shall I open an issue with more details?

That would be great. Thanks for reporting!